In this type of questions, one term in the number series is wrong. Find out the wrong term.
2, 6, 24, 96, 285, 568, 567
Answer: Option B
Explanation:
The correct pattern is x 6 - 6, x 5 - 5, x 4 - 4,.....
So, 24 is wrong and must be replaced by (6 x 5 - 5) i.e. 25.
3, 2, 8, 9, 13, 22, 18, 32, 23, 42
The given sequence is a combination of two series:
I. 3, 8, 13, 18, 23 and II. 2, 9, 22, 32, 42
The pattern in I is + 5, and the pattern in II is + 10. So, in II, 9 is wrong and must be replaced by (2 + 10) i.e. 12.
196, 169, 144, 121, 101
Answer: Option A
The sequence is (14)2, (13)2, (12)2, (11)2, (10)2.
So, 101 is wrong and must be replaced by (10)2 i.e. 100.
56, 58, 62, 70, 84, 118, 182
Answer: Option C
The correct pattern is + 2, + 4, + 8, + 16, + 32, + 64 i.e. + 2, + 22, + 23, + 24, + 25, + 26.
So, 84 is wrong and must be replaced by (70 + 16) i.e. 86.
1, 5, 5, 9, 7, 11, 11, 15, 12, 17
I. 1, 5, 7, 11, 12 and II. 5, 9, 11, 15, 17
The pattern in both I and II is + 4, + 2, + 4, + 2. So, 12 is wrong and must be replaced by (11 + 2) i.e. 13.
